Page not rendering properly

Edited the blog post to fix it, it happens from time to time i.e. you paste in a table from excel and instead of setting the width of the table to 100% of the containing div the paste sets a fixed width

I understand that I can do that, but I should not have to, there is plenty of unused space on my monitor. the style sheet is not working correctly. 

You can see the right side, but only by swiping the arrow at the bottom of the screen

There is horizontal scroll bar at the bottom of the table